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EC number: 429-380-1 | CAS number: 133336-92-2
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 17 July 2017 to 18 July 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 104 (Vapour Pressure Curve)
- Version / remarks:
- 2006
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7950 (Vapor Pressure)
- Version / remarks:
- 1996
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- effusion method: isothermal thermogravimetry
- Specific details on test material used for the study:
- Reaction/decomposition starts during melting (at ca. 288°C).
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Conclusions:
- The vapour pressure of the substance at 20°C was determined to be 7.5E-05 Pa.
The vapour pressure of the substance at 25°C was determined to be 1.1E-04 Pa. - Executive summary:
The vapour pressure of the substance was determined using the isothermal thermogravimetric effusion method in a GLP study according to EC A.4, OECD 104 and OPPTS 830.7950. The vapour pressure regression curve was constructed from duplicate measurements at 210°C, 220°C and 230°C. The vapour pressure of the substance at 20°C and 25°C was calculated to be 7.5E-05 Pa and 1.1E-04 Pa, resp.
Reference
Table: Results of the isothermal TGA analysis (test item)
Temperature |
Weight loss |
vT |
log vT |
log PT |
PT |
210 |
1.06868 |
1.28E-04 |
-3.89 |
0.08 |
1.2 |
|
1.01359 |
1.21E-04 |
-3.92 |
0.05 |
1.1 |
220 |
1.31529 |
1.57E-04 |
-3.80 |
0.19 |
1.6 |
|
1.31469 |
1.57E-04 |
-3.80 |
0.19 |
1.6 |
230 |
1.65561 |
1.98E-04 |
-3.70 |
0.32 |
2.1 |
|
1.67544 |
2.00E-04 |
-3.70 |
0.32 |
2.1 |
Description of key information
1.1E-04 Pa at 25°C (EC A.4, OECD 104, OPPTS 830.7950: isothermal thermogravimetric effusion method)
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
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